Home / 99,033.78-136,507.46-77,486.36

Finding the Fourth Proportional to 99,033.78, 136,507.46 and 77,486.36

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Solution

The fourth proportional to 99,033.78, 136,507.46 and 77,486.36 is: 106,806.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,033.78 : 136,507.46 = 77,486.36 : x
  2. Step 2: Convert to fraction form
    99,033.78/136,507.46 = 77,486.36/x
  3. Step 3: Cross multiply
    99,033.78x = 136,507.46 × 77,486.36
  4. Step 4: Simplify right side
    99,033.78x = 10,577,465,118.28
  5. Step 5: Solve for x
    x = 10,577,465,118.28/99,033.78
  6. Step 6: Final answer
    x = 106,806.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.